Develop real-time practical DApps using Ethereum and JavaScriptAbout This BookCreate powerful, end-to-end applications for Blockchain using EthereumWrite your first program using the Solidity programming languageChange the way you think and design your applications by using the all new database-BlockchainWho This Book Is ForThis book is for JavaScript developers who now want to create tamper-proof data (and transaction) applications using Blockchain and Ethereum. Those who are interested in cryptocurrencies and the logic and database empowering it will find this book extremely useful.What You Will LearnWalk through the basics of the Blockchain technologyImplement Blockchain's technology and its features, and see what can be achieved using themBuild DApps using Solidity and Web3.jsUnderstand the geth command and cryptographyCreate Ethereum walletsExplore consortium blockchainIn DetailBlockchain is a decentralized ledger that maintains a continuously growing list of data records that are secured from tampering and revision. Every user is allowed to connect to the network, send new transactions to it, verify transactions, and create new blocks, making it permission-less.This book will teach you what Blockchain is, how it maintains data integrity, and how to create real-world Blockchain projects using Ethereum. With interesting real-world projects, you will learn how to write smart contracts which run exactly as programmed without any chance of fraud, censorship, or third-party interference, and build end-to-end applications for Blockchain.You will learn about concepts such as cryptography in cryptocurrencies, ether security, mining , smart contracts, solidity, and more. You will also learn about web sockets, various API services for Ethereum, and much more.The blockchain is the main technical innovation of bitcoin, where it serves as the public ledger for bitcoin transactions.Style and approachThis is a project-based guide that not only gets you up and running with Blockchain, but also lets you create intuitive real-world applications that will make you an independent Blockchain developer.
GlyTouCan version 1.0 was released in 2015 as the international glycan structure repository, and a new sequence format called WURCS (Web3 Unique Representation of Carbohydrate Structures) was proposed during the early stages of the GlyTouCan project. GlyTouCan uses WURCS as its base representation for glycans because existing formats were insufficient in their flexibility to represent any and all glycans universally. Therefore, in order to obtain WURCS strings for existing or new glycan structures, conversion tools or glycan structure editors that can export WURCS became necessary. GlycanBuilder was an obvious choice to extend due to its wide usage by the community. However, GlycanBuilder was limited because it was originally developed to support mammalian glycans. It also did not support the newly proposed monosaccharide symbol standard called Symbol Nomenclature for Glycans (SNFG). Therefore in this work, we implemented a new version of GlycanBuilder to greatly increase its usability. The glycan rendering system was refactored so that cyclic glycans, nested repeating units, monosaccharide compositions and cross-linked glycan structures can be represented. Both import and export utilities for WURCS were also implemented and SNFG symbols were incorporated to allow glycans to be exported as graphics using the latest glycan symbol nomenclature. This new version of GlycanBuilder called "GlycanBuilder2", is able to support a wide variety of ambiguous glycans, including structures containing monosaccharides from bacteria and plants. These glycans can also be displayed using the new SNFG symbols. This tool can aid researchers in communicating about the complex, diverse, and ambiguous structures of glycans more rapidly. Moreover, the new GlycanBuilder can now easily output WURCS sequences from glycans drawn on the canvas. Most importantly, because GlyTouCan employs WURCS as the basic format for registration and searching of glycan information, a wider variety of glycans can now be readily registered and queried in GlyTouCan.
Distributed ledger technology, a method of storing and maintaining the integrity of multiple copies of critical data using a massively redundant network of participating machines, has found a “killer application” in blockchain, a type of distributed ledger. A blockchain consists of sequential blocks that may never be modified or reordered, leaving a public, auditable record that is consistent and highly resistant to tampering and deletion. These qualities make blockchain eminently suitable for its most common use, cryptocurrency, and its occasional variants in the form of cryptocurrency tokens, used to represent ownership or some other right to virtual or physical goods and capabilities. Blockchain also enables smart contracts, discrete bodies of software written to serve both as the memorial and the means of execution of an agreement between parties. Smart contracts can have all the elements of a traditional contract, and as jurisdictions legislate or jurists rule on the fine points of enforceability and the acceptability of smart contracts as traditional contracts, applications in nearly every area of commerce have emerged. Digital lawyers may not need to become software developers, but deepening their understanding of the capabilities and limitations of the technology, developing a keen awareness of the issues at the intersection between code and the law, as well as the law’s readiness in this area, will be of great advantage to them and their clients in this rapidly evolving area at the intersection of technology, commerce and law.
Masaaki Matsubara, Kiyoko F. Aoki‐Kinoshita, Nobuyuki P. Aoki, Issaku Yamada · 5 authors
Accurate representation of structural ambiguity is important for storing carbohydrate structures containing varying levels of ambiguity in the literature and databases. Although many representations for carbohydrates have been developed in the past, a generalized but discrete representation format did not exist. We had previously developed the Web3 Unique Representation of Carbohydrate Structures (WURCS) in an attempt to define a generalizable and unique linear representation for carbohydrate structures. However, it lacked sufficient rules to uniquely describe ambiguous structures. In this work, we updated WURCS to handle such ambiguous monosaccharide structures. In particular, to handle structural ambiguity around (potential) carbonyl groups incidental to the carbohydrate analysis, we defined a representation of backbone carbons containing atomic-level ambiguity. As a result, we show that WURCS 2.0 can represent a wider variety of carbohydrate structures containing ambiguous monosaccharides, such as those whose ring closure is undefined or whose anomeric information is only known. This new format provides a representation of carbohydrates that was not possible before, and it is currently being used by the International Glycan Structure Repository GlyTouCan.
In the US, the services sector provides employment to about 100 million, while the manufacturing sector provides employment to about 20 million. These sectors are highly automated, and driven by sophisticated business processes forming an integral part of the digital economy. While the applications themselves may be distributed over the Internet in time and space, the core business, regulatory, and financial aspects of the digital economy are still centralized, with the need for centralized agencies (such as banks, customs authorities, and tax agencies) to authenticate and settle payments and transactions. These centralized services often are manual, difficult to automate, and represent a bottleneck to facilitating a frictionless digital economy. The next revolutionary step in the services and manufacturing economy of the future is the development of automated distributed applications that do not depend on these traditional centralized agencies for controlling, facilitating and settling multi-party transactions that may themselves be subject to complex contractual constraints. The blockchain technology is an integral part of these next steps that promises a smart new world of automation of complex services and manufacturing processes. Blockchain is a distributed and public ledger which maintains records of all the transactions on a blockchain network comprising suppliers of products and services and consumers. With the blockchain's ability to establish trust in a peer-to-peer network through a distributed consensus mechanism rather than relying on a powerful centralized authority, the technology is being seen by the industry experts as one of the greatest innovations since the invention of the Internet. As per Santander, blockchain technologies can reduce annual costs for financial firms by $20b by streamlining processes and improving efficiency. In addition, investment and spending on blockchain technology is expected to increase at a compound annual growth rate (CAGR) of 52% through 2019. We have written this textbook, as part of our expanding Hands-On Approach(TM) series, to serve as a textbook for senior-level and graduate-level courses on financial and regulation technologies, business analytics, Internet of Things, and cryptocurrency. This book is also written for use within industries in the FinTech and RegTech space that may be interested in rolling out products and services that utilize this new area of technology. An accompanying website for this book contains additional support for instruction and learning (www.blockchain-book.com). The book is organized into three main parts, comprising a total of ten chapters. Part I provides an introduction to blockchain concepts, design patterns, and architectures for blockchain applications. A blockchain stack comprising a decentralized computation platform, a decentralized messaging platform, and a decentralized storage platform is described. Part II introduces the readers to tools and platforms for blockchain, such as Geth, PyEthApp, TestRPC, Mist Ethereum Wallet, MetaMask, Web3 JavaScript API and the Truffle Dapp framework. Implementation examples of various smart contracts and decentralized applications (Dapps) are provided. Part III focuses on advanced topics such as the security and scalability related challenges for the blockchain platforms.
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Ubiquitous sensing enabled by Wireless Sensor Network (WSN) technologies cuts across many areas of modern day living. This offers the ability to measure, infer and understand environmental indicators, from delicate ecologies and natural resources to urban environments. The proliferation of these devices in a communicating-actuating network creates the Internet of Things (IoT), wherein, sensors and actuators blend seamlessly with the environment around us, and the information is shared across platforms in order to develop a common operating picture (COP). Fuelled by the recent adaptation of a variety of enabling wireless technologies such as RFID tags and embedded sensor and actuator nodes, the IoT has stepped out of its infancy and is the the next revolutionary technology in transforming the Internet into a fully integrated Future Internet. As we move from www (static pages web) to web2 (social networking web) to web3 (ubiquitous computing web), the need for data-on-demand using sophisticated intuitive queries increases significantly. This paper presents a Cloud centric vision for worldwide implementation of Internet of Things. The key enabling technologies and application domains that are likely to drive IoT research in the near future are discussed. A Cloud implementation using Aneka, which is based on interaction of private and public Clouds is presented. We conclude our IoT vision by expanding on the need for convergence of WSN, the Internet and distributed computing directed at technological research community.
Die Möglichkeit der Programmierbarkeit des Bitcoins ist fast ein nachträglicher Einfall, auch wenn Sidechain‐Vorschläge diese Programmierbarkeit ein wenig leichter machen wollen und es bereits Altcoins mit verschiedenen spezifischen Anwendungen gibt. Im Gegensatz dazu wurde das Kryptowährungstechnologieprojekt Ethereum von Vitalik Buterin, seinem Erfinder, von Tag 1 als Software‐Entwicklungsplattform für dezentrale Applikationen konzipiert, und ihre Blockchain wurde speziell entwickelt, um die Ausführung dieser dezentralen Apps (auch Dapps genannt) zu unterstützen. Vitalik Buterin, 1994 in Russland geboren, war vor der Gründung von Ethereum auch involviert in die Entwicklungsprojekte Colored Coins und Mastercoins. Er gewann 2014 den "World Technology Award" und ein Stipendium des Risikokapitalgebers Peter Thiel. In dem Diskussionspapier zu Ethereum skizzierte Buterin vor allem die Grenzen einer Programmierbarkeit der Bitcoin‐Blockchain und schlug die Erstellung einer neuen komplett programmierbaren Blockchain mit einer turing‐vollständigen Programmiersprache vor. Anders als andere Blockchain‐Projekte soll die Ethereum Software nicht nur für einen Zweck nutzbar sein – sondern soll die Basis für die Erarbeitung aller möglichen Arten von Lösungen sein und dabei die Umsetzung intelligenter Verträge (Smart Contracts) ebenso erfassen als auch die Ethereum‐spezifische Idee von dezentralen autonomen Organisationen (DAOs).
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Shermin Voshmgir, Technologiestiftung Innovationszentrum Berlin
Blockchain is a new technology for the verification of data transactions. It is a type of distributed data storage and processing that enables many features of centrally organized information systems to be decentralized. The Blockchain can be used everywhere where information is to be stored and verified and where usually an intermediate agent is engaged. A Blockchain is a shared, trusted, public record of transactions, that everyone can inspect, but which no single user controls. It is an encrypted, secure, tamper resistant, distributed database. It solves a complex mathematical problem and allows us to build anything from simple Smart Contracts, to whole dApps (Decentralized Applications) or complex DAOs (Decentralized Autonomous Organizations) on top of it. It is considered by many to be a game changer that allows us to decentralize trust, creating the basis for a peer-to-peer economy, powered by auto enforceable smart contracts. Transactions on the Blockchain through these smart contracts are in many cases faster and cheaper and more secure than transactions that classically run through neutral central authorities. Blockchain can be seen as one of the most important building blocks of the next generation Internet. If the WWW revolutionized information, and the Web2 introduced the programmable Web through Social Media and the Sharing Economy, Blockchain can be seen as the most important building block in the Web3, the decentral web, allowing for real P2P transactions without a middle man.This report explains Blockchain as a technology, analyses potential use cases, lines out relevant players in Berlin, and defines an action plan to strengthen the local ecosystem. The first part will give an introduction to Blockchain as a technology without going into too many technical details. The second part will showcase selected applications and discuss industry sectors where Blockchain could be relevant: Banking and Finance, Creative Industries, Sharing Economy, Energy Sector, eGovernment, Legal Tech, Health, and IT Consulting. The last part of this report will focus on Berlin as an Innovation Hub, analyzing the current ecosystem and players active in the field.
Dappfort is a blockchain-focused Web3 development company that helps businesses harness the power of decentralized technologies to build secure, scalable, and future-ready digital solutions. Headquartered in Madurai, India, with additional presence in London, Dappfort works across a broad range of industries — including finance, healthcare, gaming, retail, and supply chain — delivering tailored blockchain and Web3 applications to startups, enterprises, and global organizations. The company’s core services include the design and development of decentralized applications (DApps), crypto exchanges (centralized and decentralized), crypto wallets, NFT marketplaces, DeFi platforms, token creation, smart contract development, and enterprise Web3 integration. Dappfort also expands into related areas such as Web3 e-commerce, AI-powered blockchain solutions, and metaverse experiences, supporting clients from strategy and consulting through deployment and ongoing support. With expertise in major blockchain networks like Ethereum, Solana, Binance Smart Chain, and others, Dappfort positions itself as a full-stack partner for businesses aiming to enter or grow in the decentralized digital economy. While the company promotes a strong innovation- and security-oriented approach, external reviews on third-party platforms show mixed feedback from users about project delivery and quality.
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The corresponding technologies for sharing information and 3Dinteraction by Web3 D were described briefly.An efficient scene management scheme for real-time visualization of a large-scale underground scene was proposed to meet its demands for webpage visualization.Firstly,the raw data from the underground scene were preprocessed in lightweight,and a shell structure-aware scene analysis algorithm was employed for constructing a scene management structure.Then,some strategies were put forward according to the characteristics of the underground scene data,and those are a SOI-ExteriorShell strategy based on Sector Of Interest(SOI)management for outdoor scenes and a Portal-InteriorShell strategy supporting progressive loading for indoor ones.With the switch between indoor and outdoor scenes,the method dynamically chooses the corresponding strategy and makes it possible to roam in the large-scale underground scene online.From the final experiment,it concludes that the proposed method efficiently culls unnecessary scenes in a greatly large extent and is capable of meeting the requirements for real-time visualization of the large-scale underground scene over Internet.As the webpage has an advantage of cross-platform,the system supports users to roamand control the large-scale underground scene under cross-platform.
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The introduction of Web GL standards accelerated the arrival of the Web3 D era. The generation and processing of3 D model is the core in Web3D project. On the basis of the three.js engine,the data drive modeling,importing and processing of static 3D model,and importing and analysis of dynamic 3D model in the Web environment are introduced. The experimental results show that the Web3 D technology based on Web GL platform and three.js engine can not only effectively achieve the data visualization and the database-oriented parametric modeling,but also has compatibleness with most of the industrial 3D models and support the whole Web3 D project.
Introduction au numéro de COMMUNICATION & MANAGEMENT faisant suite au colloque de novembre 2013 du Lerass-Ceric, à Montpellier 3, intitulé : « La culture en projets, service et/ou industrie : d’Adorno au Web3 ». Le texte situe la question théorique des industries culturelles et aborde des aspects problématisés des nouvelles conditions de présence et de développement de la création, notamment en arts plastiques, dans une période qui sollicite autrement les acteurs des industries créatives.
In recent years, the Semantic Web has become the focus of life science database development as a means to link life science data in an effective and efficient manner. In order for carbohydrate data to be applied to this new technology, there are two requirements for carbohydrate data representations: (1) a linear notation which can be used as a URI (Uniform Resource Identifier) if needed and (2) a unique notation such that any published glycan structure can be represented distinctively. This latter requirement includes the possible representation of nonstandard monosaccharide units as a part of the glycan structure, as well as compositions, repeating units, and ambiguous structures where linkages/linkage positions are unidentified. Therefore, we have developed the Web3 Unique Representation of Carbohydrate Structures (WURCS) as a new linear notation for representing carbohydrates for the Semantic Web.
[Associate Editor's note: In the September 2008 edition of Voice Research and Technology, I introduced a topic called Quantifying Tessitura in a Song. It was more of a teaser than a complete work. My good friend John Nix completed a real study, including dosimetry on a singer who performed a Mozart composition (different from Il mio tesoro intanto, which I used for my test case)-Ingo R. Titze.]INTRODUCTIONSelecting appropriate repertoire is a primary responsibility for a singing teacher. Astute repertoire selection can help address the technical and musical development of a singer, as well as advance a singer's career in the case of those who are working professionals. Traditionally, repertoire is assigned on an individual basis by carefully considering the singer's age, gender, technical challenges, personality, musicianship, and developmental level, then cross referencing that singer assessment with an evaluation of the vocal, musical, linguistic, and expressive challenges of potential repertoire.1 A number of print2 and web3 resources exist to assist teachers in choosing potential new literature.In the past, the selection process has depended upon the acquired ability of the singing teacher both to evaluate his or her students and to make judgments about vocal repertoire based upon personal knowledge and close examination of the literature. In recent years, however, the voice range profile (VRP) and voice dosimetry have begun to show promise as objective tools that could assist teachers with the selection process.Several articles have suggested ways in which the VRP could be used or improved upon for determining the voice classification of performers or for guiding repertoire choices. Emerich, Titze, Svec, Popolo, and Logan compared laboratory VRPs for eight professional actors with speech range profiles of the actors during a dramatic scene recorded in a laboratory and on stage in performance.4 At times, the actors exceeded their VRP thresholds when in either of the performance conditions. The study highlighted both the utility of the VRP when comparing laboratory values with actual performance voice usage and the shortcomings of the VRP in predicting what repertoire might exceed a performer's capabilities given the emotional content of live performance. Lamarche, Ternstrom, and Hertegârd also looked at the VRP as compared to the performance of repertoire, combining a commercial VRP program with a response button that subjects pressed during moments of difficult production.5 The subjects, all female professionally trained singers, performed three tasks, including the singing of their best aria, using performance-acceptable quality. Subjects also rated how well the button pressings reflected their experiences and usual vocal challenges; this rating included a viewing of a visual graph of the button responses. The investigators' coupling of objective data from the VRP tasks with (a) the singer's self-assessment captured mid-task and (b) the postperformance evaluation of the data and the responses shows significant promise as a means for enhancing singing teachers' guidance of their students. Lamarche, Ternstrom, and Pabon continued testing improvements of the VRP for singers by examining whether VRPs for singers should be limited to physiological measures (without considering performance quality elements), or whether performance abilities should also be measured in some fashion.6 After testing thirty female subjects, all professionally active singers, they concluded that examining the voice as it is used in performance has clinical importance, and that both types of VRPs should be used for assessing singers. Finally, Herbst, Duus, Jers, and Svec compared the maximum phonation frequency range (MPFR) of amateur choir singers (as gathered during a VRP) with the required pitch range (RPR) for their chosen voice part within a choir, based upon part ranges specified in a commonly used music reference. …
Web 3.0, the web of social and semantic cooperation, calls for a methodological multidisciplinary architecture in order to reach its mainstream objectives. With the lack of such an architecture and the reliance of existing efforts on lightweight semantics and RDF graphs, this thesis proposes "Web3.OWL", an ontology-driven framework towards a Web 3.0 knowledge architecture. \nMeanwhile, the online social parenting data and their corresponding websites users known as "mommy bloggers" undergo one of the fastest online demographics growth, \nand the available literature reflects the very little attention this growth has so far been given and the various deficiencies the parenting domain suffers from; these deficiencies all fall under the umbrella of the scarcity of parenting sociomedical analysis and decision-support systems. \nThe Web3.OWL framework puts forward an approach that relies on the Meta-Object Facility for Semantics standard (SMOF) for the management of its modeled OWL (Web Ontology Language) expressive domain ontologies on the one hand, and the coordination of its various underlined Web 3.0 prerequisite disciplines on the other. \nSetting off with a holistic portrayal of Web3.OWL’s components and workflow, the thesis progresses into a more analytic exploration of its main paradigms. Out of its \ndifferent ontology-aware paradigms are notably highlighted both its methodology for expressiveness handling through modularization and projection techniques and algorithms, \nand its facilities for tagging inference, suggestion and processing. \n \nWeb3.OWL, albeit generic by conception, proves its efficiency in solving the deficiencies and meeting the requirements of the sociomedical domain of interest. Its conceived ontology for parenting analysis and surveillance, baptised "ParOnt", strongly contributes to the backbone metamodel and the various constituents of this ontology-driven framework. \nAccordingly, as the workflow revolves around Description Logics principles, OWL 2 profiles along with standard and beyond-standard reasoning techniques, conducted experiments and competency questions are illustrated, thus establishing the required Web 3.0 outcomes. The empirical results of the diverse preliminary decision-support and recommendation services targeting parenting public awareness, orientation and education do ascertain, in conclusion, the value and potentials of the proposed conceptual framework.
This paper takes the architectural historical relics in the city of Dazhou as an example.With the applying of technologies of AS2 SH and Web3 D,and adopting the improved five-layer architecture model,the digital information platform for immovable historical relics was developed successfully,which on the one hand,improved current means and ways in historical relics survey,management and protection,on the other hand,achieved high efficiency,normalization and modernization.The actual development indicates the platform performed well in expansibility,maintenance and portability.Besides,pretty feedbacks from users on the platform,and achieves expected goal.
To realize the digitalization and visualization of road achives,this paper presents the MVCPF plug-in framework which is based on MVC Design Pattern and modularization programming method.According to the single responsibility principle,application is divided into some plug-in modules which follow MVC mode.Modules that stand apart from each other can be integrated as a whole by using message response and data share of MVC.Based of that,R-Trees is used to create a spatial index for the data,and achieve an efficient management of huge amounts of data,achieve in quick query of information in 3Dscene;road web3 Darchives MIS is designed out which has the characteristics of a clear structure,small size,scalability,etc.It is easy to be published,updated and expanded.The huge road 3Dscene,which contains terrain,road and attached facility models,can be transported and rendered as fast as possible.In addition,the achive information can be obtained realtimely in the web3 Dscene.
Simulation and Modeling Applications
Geological Modeling and Analysis
Advanced Computational Techniques and Applications
The basic concepts and features of Web3 D technology are introduced and four kinds of commonly used Web3 D technologies are reviewed. Then the method of application and development process of Cult3 D are summarized,and the applications of Web3 D technology in the teaching of civil engineering specialty are explicated by an example,so as to provide some reference.
Are there differences between the sale of an unopened Super Mario Bros. computer game and of the digital collage of 5,000 images? Viewed from the perspective of the doctrine of exhaustion, we can easily conclude that the two transfers have significant differences. The auction of the tangible data carrier of the Super Mario’s 1986 edition (for $660,000) 1 fits well into the doctrine. The auction of the NFT (non-fungible token) representing Beeple’s “Everdays: the First 5000 Days” (for an equivalent of an astounding $69.3 million) 2 seems to be hype with a snowball effect rather than a modern encapsulation of digital exhaustion. Some commentators, 3 including the present author in collaboration with Alexandra Giannapoulou, João Pedro Quintais, and Balázs Bodó, 4 have thoroughly introduced the incompatibility of the NFT mania with the existing copyright status quo, and so – in connection with the present book’s topic – the sale of tokenized information, which is capable of representing information related to digital artworks, is practically excluded from the scope of the exhaustion of the right of distribution. At the same time, NFTs de facto offer a “code-based digital ecosystem that has practical consequences for the copyright-relevant fields of creativeness.” 5 The sale and resale of NFTs is possible; an exchange of information and title to “own” and “trade” information related to copyrightable subject matter is technologically guaranteed. In line with that, a quasi-exhaustion regime has also emerged. As such, the NFT mania can practically evidence the need for and modern technology’s capability of offering digital marketplaces for artworks as well.